1 /* Copyright (C) 2000 Free Software Foundation.
2
3 Ensure builtin memcpy and strcpy perform correctly.
4
5 Written by Jakub Jelinek, 11/24/2000. */
6
7 extern void abort (void);
8 extern char *strcpy (char *, const char *);
9 typedef __SIZE_TYPE__ size_t;
10 extern void *memcpy (void *, const void *, size_t);
11 extern int memcmp (const void *, const void *, size_t);
12
13 char p[32] = "";
14
main()15 int main()
16 {
17 if (strcpy (p, "abcde") != p || memcmp (p, "abcde", 6))
18 abort ();
19 if (strcpy (p + 16, "vwxyz" + 1) != p + 16 || memcmp (p + 16, "wxyz", 5))
20 abort ();
21 if (strcpy (p + 1, "") != p + 1 || memcmp (p, "a\0cde", 6))
22 abort ();
23 if (strcpy (p + 3, "fghij") != p + 3 || memcmp (p, "a\0cfghij", 9))
24 abort ();
25 if (memcpy (p, "ABCDE", 6) != p || memcmp (p, "ABCDE", 6))
26 abort ();
27 if (memcpy (p + 16, "VWX" + 1, 2) != p + 16 || memcmp (p + 16, "WXyz", 5))
28 abort ();
29 if (memcpy (p + 1, "", 1) != p + 1 || memcmp (p, "A\0CDE", 6))
30 abort ();
31 if (memcpy (p + 3, "FGHI", 4) != p + 3 || memcmp (p, "A\0CFGHIj", 9))
32 abort ();
33
34 /* Test at least one instance of the __builtin_ style. We do this
35 to ensure that it works and that the prototype is correct. */
36 if (__builtin_strcpy (p, "abcde") != p || memcmp (p, "abcde", 6))
37 abort ();
38 if (__builtin_memcpy (p, "ABCDE", 6) != p || memcmp (p, "ABCDE", 6))
39 abort ();
40
41 return 0;
42 }
43
44 #ifdef __OPTIMIZE__
45 /* When optimizing, all the above cases should be transformed into
46 something else. So any remaining calls to the original function
47 should abort. */
48 __attribute__ ((noinline))
49 static char *
strcpy(char * d,const char * s)50 strcpy (char *d, const char *s)
51 {
52 abort ();
53 }
54 #endif
55